{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:QRAI67RIXM5MVPBI3JRNPDPJT5","short_pith_number":"pith:QRAI67RI","canonical_record":{"source":{"id":"1409.7927","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-09-28T16:09:21Z","cross_cats_sorted":[],"title_canon_sha256":"2a2527c406c7f956ef8e154eef7d4a9af5cb8ed64bf9d99dd9f6d7ac115fd93d","abstract_canon_sha256":"89e53281f1d183a12ce2b8f426f6b9b18b4cf2ef368b8ed1a52e21f8a8194ce5"},"schema_version":"1.0"},"canonical_sha256":"84408f7e28bb3acabc28da62d78de99f66bf7c228ebbed582a600d5cf3f63e60","source":{"kind":"arxiv","id":"1409.7927","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.7927","created_at":"2026-05-18T01:41:54Z"},{"alias_kind":"arxiv_version","alias_value":"1409.7927v2","created_at":"2026-05-18T01:41:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.7927","created_at":"2026-05-18T01:41:54Z"},{"alias_kind":"pith_short_12","alias_value":"QRAI67RIXM5M","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QRAI67RIXM5MVPBI","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QRAI67RI","created_at":"2026-05-18T12:28:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:QRAI67RIXM5MVPBI3JRNPDPJT5","target":"record","payload":{"canonical_record":{"source":{"id":"1409.7927","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-09-28T16:09:21Z","cross_cats_sorted":[],"title_canon_sha256":"2a2527c406c7f956ef8e154eef7d4a9af5cb8ed64bf9d99dd9f6d7ac115fd93d","abstract_canon_sha256":"89e53281f1d183a12ce2b8f426f6b9b18b4cf2ef368b8ed1a52e21f8a8194ce5"},"schema_version":"1.0"},"canonical_sha256":"84408f7e28bb3acabc28da62d78de99f66bf7c228ebbed582a600d5cf3f63e60","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:54.613099Z","signature_b64":"pfxh4ksd6VMFNihBwhaU6d2j2vkdaB9vsZcG3o4mF1QNeXbvWIVNbWPcVbCAAmyhZW/nK4PR8+aQArsyB1WJCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"84408f7e28bb3acabc28da62d78de99f66bf7c228ebbed582a600d5cf3f63e60","last_reissued_at":"2026-05-18T01:41:54.612441Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:54.612441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.7927","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:41:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O+x2bddcLgwGdQNfx8uB6jpbPfmD5S+PY35uClmo/LJMZQhdvfiTYlfBxRKy/BhWCKC9H09LIAXMdLbWQfBiDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T04:19:07.570141Z"},"content_sha256":"bce8633a035aa068498daf18e363490a043b2d76c4e4a7db1e00f7bf459c40ad","schema_version":"1.0","event_id":"sha256:bce8633a035aa068498daf18e363490a043b2d76c4e4a7db1e00f7bf459c40ad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:QRAI67RIXM5MVPBI3JRNPDPJT5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Group Delay Control in Longitudinal Offset Coupled Resonator Optical Waveguides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"F.J. Fraile-Pel\\'aez, P. Chamorro-Posada","submitted_at":"2014-09-28T16:09:21Z","abstract_excerpt":"We study the differential group delay that can be obtained in coupled micro-ring resonator waveguides with longitudinal offset couplers. Various devices based on this effect are proposed and analyzed using a finite-differences time-domain method and their potential applications are discussed."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.7927","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:41:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9IBHr/w673vUsatbE2XiLcckfoqPPake+qqxUoP+yQwmFZdtX4ji030IGu+EhbrzPI6mQTGIIq2cFkLYJyExAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T04:19:07.570508Z"},"content_sha256":"dedd9b877e89014fe3c0b82751a694fe5b2215436484e23566216ea77e915ad1","schema_version":"1.0","event_id":"sha256:dedd9b877e89014fe3c0b82751a694fe5b2215436484e23566216ea77e915ad1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QRAI67RIXM5MVPBI3JRNPDPJT5/bundle.json","state_url":"https://pith.science/pith/QRAI67RIXM5MVPBI3JRNPDPJT5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QRAI67RIXM5MVPBI3JRNPDPJT5/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-12T04:19:07Z","links":{"resolver":"https://pith.science/pith/QRAI67RIXM5MVPBI3JRNPDPJT5","bundle":"https://pith.science/pith/QRAI67RIXM5MVPBI3JRNPDPJT5/bundle.json","state":"https://pith.science/pith/QRAI67RIXM5MVPBI3JRNPDPJT5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QRAI67RIXM5MVPBI3JRNPDPJT5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:QRAI67RIXM5MVPBI3JRNPDPJT5","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"89e53281f1d183a12ce2b8f426f6b9b18b4cf2ef368b8ed1a52e21f8a8194ce5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-09-28T16:09:21Z","title_canon_sha256":"2a2527c406c7f956ef8e154eef7d4a9af5cb8ed64bf9d99dd9f6d7ac115fd93d"},"schema_version":"1.0","source":{"id":"1409.7927","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.7927","created_at":"2026-05-18T01:41:54Z"},{"alias_kind":"arxiv_version","alias_value":"1409.7927v2","created_at":"2026-05-18T01:41:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.7927","created_at":"2026-05-18T01:41:54Z"},{"alias_kind":"pith_short_12","alias_value":"QRAI67RIXM5M","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QRAI67RIXM5MVPBI","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QRAI67RI","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:dedd9b877e89014fe3c0b82751a694fe5b2215436484e23566216ea77e915ad1","target":"graph","created_at":"2026-05-18T01:41:54Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We study the differential group delay that can be obtained in coupled micro-ring resonator waveguides with longitudinal offset couplers. Various devices based on this effect are proposed and analyzed using a finite-differences time-domain method and their potential applications are discussed.","authors_text":"F.J. Fraile-Pel\\'aez, P. Chamorro-Posada","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-09-28T16:09:21Z","title":"Group Delay Control in Longitudinal Offset Coupled Resonator Optical Waveguides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.7927","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:bce8633a035aa068498daf18e363490a043b2d76c4e4a7db1e00f7bf459c40ad","target":"record","created_at":"2026-05-18T01:41:54Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"89e53281f1d183a12ce2b8f426f6b9b18b4cf2ef368b8ed1a52e21f8a8194ce5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-09-28T16:09:21Z","title_canon_sha256":"2a2527c406c7f956ef8e154eef7d4a9af5cb8ed64bf9d99dd9f6d7ac115fd93d"},"schema_version":"1.0","source":{"id":"1409.7927","kind":"arxiv","version":2}},"canonical_sha256":"84408f7e28bb3acabc28da62d78de99f66bf7c228ebbed582a600d5cf3f63e60","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"84408f7e28bb3acabc28da62d78de99f66bf7c228ebbed582a600d5cf3f63e60","first_computed_at":"2026-05-18T01:41:54.612441Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:54.612441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pfxh4ksd6VMFNihBwhaU6d2j2vkdaB9vsZcG3o4mF1QNeXbvWIVNbWPcVbCAAmyhZW/nK4PR8+aQArsyB1WJCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:54.613099Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.7927","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bce8633a035aa068498daf18e363490a043b2d76c4e4a7db1e00f7bf459c40ad","sha256:dedd9b877e89014fe3c0b82751a694fe5b2215436484e23566216ea77e915ad1"],"state_sha256":"5f75492d2962cef2ba832b0ba5e5bdbfde85a73c4f0ced87974316eb91874cec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Ni8HKnFQxm0j0A15w7FeHrJxyOE6j/xrHRqJdEUYC6rU0JqRHZvtlDt+uDVzwsy8yDwwI6OXpVQBMqu2l/XDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T04:19:07.572418Z","bundle_sha256":"b86571b8e30815c8e8d98502c455d7aced0c7cb7a3a64fd51892cddb497bc62c"}}